Messages in this thread |  | | | Date | Sat, 21 Jun 2008 14:16:15 -0700 | | From | Arjan van de Ven <> | | Subject | Re: v2.6.26-rc7: Negative powertop values |
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On Sat, 21 Jun 2008 21:16:37 +0200 "Vegard Nossum" <vegard.nossum@gmail.com> wrote:
> Hi, > > I was testing v2.6.26-rc7 by running lmbench and hotplug/-unplugging > CPUs and a few other programs at the same time. Powertop was showing a > negative number of wakeups/second and average C3 residency was > something really insane. Is there anything strange with this schedstat > file, or is there another file I should look at that can explain the > strange powertop numbers? Or maybe it's just an artifact of powertop > and this has nothing to do with the kernel?
powertop doesn't assume you do cpu hotunplug (and the internal state goes wacky if you do).
[I assume you know that doing a software unplug you burn more power than by leaving the cpu idle]
-- If you want to reach me at my work email, use arjan@linux.intel.com For development, discussion and tips for power savings, visit http://www.lesswatts.org
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